On Saturday, February 23, 2013 4:47:40 PM UTC-5, Joe Gwinn wrote:   
      
   >   
   > On cursory reading, it sounds like they are describing a GRIN lens, and   
   >   
   > it's true that one can think of a graded-index multimode optical fiber   
   >   
   > as a kind of GRIN lens, and such a fiber can in theory transmit an   
   >   
   > image, but I have to wonder how good an image, and for how far.   
   >   
   >   
   >   
   > Joe Gwinn   
      
   Joe   
      
   The 46 formal claims don't seem to mention anything special about the fiber   
   used. Is there a particular portion of the patent's detailed discription   
   suggesting graded-index fibers are used?   
      
   In any event, the use of graded-index fiber to transmit images is an old idea   
   which pre-dates the patent and was found to be unsatisfactory.   
      
   Tony C.   
      
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